and by contributions to your pbs station from viewers like you. thank you. >> suarez: there may be hope yet for bringing the national epidemic of obesity under control. at least, the latest numbers on calories and fast food, released today, indicated possible progress. for years, health officials have warned about americans' growing girth. now, research from the centers for disease control and prevention suggests the fight against fat may be having an effect. among the findings: american children consumed fewer calories in 2010 than a decade before-- 7% less for boys and 4% less for girls. and for adults, fast food accounted for just over 11% of the calories consumed in 2010, down from nearly 13% in 2006. the researchers acknowledge the changes are small and can't be fully explained. but public campaigns against obesity have intensified in recent years. last september, for instance, new york city's board of health limited sugared drinks and sodas to 16 ounces or less. mayor michael bloomberg praised the prohibition that takes effect march 12th. >>